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Finding the Fourth Proportional to 454.61, 680.95 and 300.61

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Solution

The fourth proportional to 454.61, 680.95 and 300.61 is: 450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.61 : 680.95 = 300.61 : x
  2. Step 2: Convert to fraction form
    454.61/680.95 = 300.61/x
  3. Step 3: Cross multiply
    454.61x = 680.95 × 300.61
  4. Step 4: Simplify right side
    454.61x = 204,695.47
  5. Step 5: Solve for x
    x = 204,695.47/454.61
  6. Step 6: Final answer
    x = 450.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.